The parking brakes operated by a automatic tensioner mechanism built into the hand lever and cable system. The front cable is connected to the hand lever and the equalizer. The rear cables attached to the equalizer and the parking brake shoe actuator.

A set of drum type brake shoes are used for parking brakes. The shoes are mounted to the rear disc brake adaptor. The parking brake drum is integrated into the rear disc brake rotor.

Diagnosis and testing the parking brake

NOTE: PARKING BRAKE ADJUSTMENT IS CONTROLLED BY AN AUTOMATIC CABLE TENSIONER AND DOES NOT REQUIRE ADJUSTMENT. THE ONLY ADJUSTMENT THAT MAY BE NECESSARY WOULD BE TO THE PARK BRAKE SHOES IF THEY ARE WORN, OR WHEN THE SHOES ARE REPLACED,
REMOVED FOR ACCESS TO OTHER PARTS, OR WHEN ONE OR BOTH ROTORS ARE REPLACED.

The parking brake switch is in circuit with the red warning lamp in the dash. The switch will cause the lamp to illuminate only when the parking brakes are applied. If the lamp remains on after parking brake release, the switch or wires are faulty.

If the red lamp comes on a fault has occurred in the front or rear brake hydraulic system.

If the red warning lamp and yellow warning lamp come on, the electronic brake distribution may be at fault.

In most cases, the actual cause of an improperly functioning parking brake (too loose/too tight/won’t hold), can be traced to a parking brake component.

NOTE: THE LEADING CAUSE OF IMPROPER PARKING BRAKE OPERATION, IS EXCESSIVE CLEARANCE BETWEEN THE PARKING BRAKE SHOES AND THE SHOE BRAKING SURFACE. EXCESSIVE CLEARANCE IS A RESULT OF LINING AND/OR DRUM WEAR, DRUM SURFACE MACHINED OVERSIZE.